property friends : {"Readmon"}
property watchedChatRoomz : {"MEINCHANNELDENICHUEBERWACHE"}

using terms from application "Colloquy"

    on member joined whoArrived in whichChatRoom
        if watchedChatRoomz contains (whichChatRoom's name) then
            set n to (whoArrived's name)
            if friends contains n then
                tell whichChatRoom
                    send message ("Debug: ''kick " & n & "''")
                    send raw command ("kick " & n)
                end tell
            end if
        end if
    end member joined

end using terms from